Foolproof synonyms

fo͝ol'pro͝of'

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The definition of infallible is someone or something that is always perfect and right, without any errors or mistakes.
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Capable of being relied on; dependable:
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Actually in effect.
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That cannot be doubted, questioned, or disputed; absolutely true; certain
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proof against human misuse or error
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Suitable or fit to be relied on; worthy of dependence or reliance; trustworthy
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Able, or easily able to be depended on.
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That doesn't cause undue damage, in the event of failure.
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Designed so as to be impervious to human error or misuse
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proof against human misuse or error
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Find another word for foolproof. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for foolproof, like: unfailing, infallible, certain, effective, sure, goof-proof, , reliable, dependable, fail-safe and sure-fire.